/Engine/Plugins/Runtime/Metasound/Source/MetasoundFrontend/Public/MetasoundFrontendDocumentBuilder.h
bool SetNodeInputDefault ( const [FGuid](API\Runtime\Core\Misc\FGuid) & InNodeID, const [FGuid](API\Runtime\Core\Misc\FGuid) & InVertexID, const [FMetasoundFrontendLiteral](API\Plugins\MetasoundFrontend\FMetasoundFrontendLiteral) & InLiteral )